Lie Groups for Pedestrians2026-10-09 by Harry J. Lipkinphysicsmathematicsgroup‑theoryH. J. Lipkin, Lie Groups for Pedestrians, North-Holland, 1965; Dover reprint of the 2nd edition, 2002. Group theory for physicists by way of isospin, SU(3) and the harmonic oscillator, with the algebra kept as close to the physics as it will go.